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<jats:p>A discarded piece of pizza and a relatively new method of DNA testing have helped police catch the man they suspect is the serial killer nicknamed the "Grim Sleeper," the Los Angeles police announced last week.</jats:p>

<jats:p> Researchers describe two Jekyll-and-Hyde genetic variations online in <jats:italic>Science</jats:italic> this week that can lead to kidney shutdown but may also fend off a microorganism that causes sleeping sickness in thousands of people in Africa. </jats:p>

<jats:p>An executive order issued by President Barack Obama earlier this month indicates that the regulations on so-called select agents may end up more streamlined and less burdensome.</jats:p>

<jats:p>Last week, the United States began the highest review to date—in the president's bioethics commission—of problems that could come out of the young field of synthetic biology. The commission will take a "deep dive" into the subject before coming back with advice by the end of this year, said the panel's co-chair.</jats:p>

<jats:p>The Australian government has omitted the Australian Stem Cell Centre from its 2011 budget, which will force ASCC to close next June. The move will hamper Australia's ability to compete in a hot research field, some scientists claim.</jats:p>

<jats:p>At a recent meeting on how culture, usually defined as the passing on of traditions by learning from others, arises and changes, researchers probed questions such as what sparks cultural trends and how complex traditions are transmitted.</jats:p>

<jats:p> <jats:italic>Science</jats:italic> Insider reported this week that in one of the final chapters of the controversy over the stolen e-mails from climate scientists, an independent panel has mostly cleared researchers at the U.K.'s University of East Anglia of scientific malfeasance, among other stories. </jats:p>

<jats:p> Off the coast of southwest Africa, researchers have discovered that a small fish called the bearded goby feasts on jellyfish, and in doing so, helps to sustain seabirds, mammals, and larger fish in that ecosystem. In this week's issue of <jats:italic>Science</jats:italic> , they describe this fish's unusual lifestyle, which includes hiding out on the muddy sea floor in water toxic to other fish. </jats:p>

<jats:p> <jats:italic>Science</jats:italic> NOW reported this week that meerkats have their own traditions, a stimulating life may ward off cancer, and a vaccine for a deadly human pathogen may be produced by introducing genes for cold sensitivity, in addition to reporting from the Euroscience Open Forum. </jats:p>